Air Brakes #1
Air Brakes Endorsement Test | Maine 2025 #1 Page 4 of 4
Train for FREE online with our Maine CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a ME Class A/Class B driver license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.
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19 . A low air pressure warning signal should activate:
In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
20 . The air compressor is connected to the:
The air compressor of an air brake system is connected to the engine through gears or a v-belt. The compressor may be air-cooled or cooled by the engine cooling system.
21 . When parking, you should not use the parking brake if:
If your brakes are hot after coming down a steep grade, you should not use your parking brake when parking. Let your brakes cool before applying the parking brake or risk damaging the brakes.
22 . An application pressure gauge shows:
If a vehicle is equipped, an application pressure gauge shows how much air pressure is being applied to the brakes. This gauge can help a driver identify if their brakes are beginning to fade.
23 . What do the two systems of a dual air brake system share?
Both systems in a dual air brake systems share a single air compressor. If the air compressor is damaged, neither system will be able to operate properly.
24 . The ____ between an air compressor and reservoir tank prevents air from escaping if the air compressor has a leak.
A one-way check valve is required to be between an air compressor and the first main reservoir. This valve prevents air from escaping the system if the air compressor develops a leak.
25 . While driving, ____ generally holds spring brakes in place.
While driving, spring brakes are generally held in place by air pressure. If the air pressure gets low enough, the springs will activate the brakes.
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2025 Maine | Frequently Asked Questions
To acquire a CDL Tank endorsement in Maine, you must already have a Commercial Driver's License (CDL). Next, study the Tank Vehicles section of the Maine CDL Handbook. Then, schedule and pass the Tank Vehicles Knowledge Test at your local Bureau of Motor Vehicles (BMV) branch. Upon passing, you'll receive your endorsement. Training courses are also available to help prepare for the test.
Obtaining a CDL Tank license requires having a Commercial Driver's License (CDL) first. You must study the Tank Vehicles section of your state's CDL handbook, then pass the Tank Vehicles Knowledge Test at your local Bureau of Motor Vehicles. Successful completion of this test will grant you the CDL Tank endorsement. Taking a training course is also beneficial.
While specific training or experience is not mandatory to get a CDL Tank endorsement in Maine, it's highly recommended. Studying the Tank Vehicles section of the Maine CDL Handbook is necessary. Passing the Tank Vehicles Knowledge Test at the local Bureau of Motor Vehicles is also required. Training courses, though not compulsory, can help prepare for this test.
Yes, to obtain a CDL Tank endorsement in Maine, you must pass the Tank Vehicles Knowledge Test. This is an additional written exam that covers specific knowledge related to operating tank vehicles. The information for this test can be found in the Tank Vehicles section of the Maine CDL Handbook.
The written test for a CDL Tank endorsement covers several subjects, including the inspection of tank vehicles, safe driving practices for tank vehicles, and safe loading and unloading procedures. It also includes questions about the handling of emergencies and the properties of different types of liquids and gases you might transport.
The CDL Tank endorsement assessment does not involve a skills or maneuvers test. Rather, it is a written test that examines your knowledge of operating tank vehicles. This includes understanding the vehicle's handling characteristics, the importance of inspecting tank vehicles, and the procedures to follow when loading and unloading cargo.
Yes, there are certain limitations for drivers with a CDL Tank endorsement. They are only allowed to operate tank vehicles, which are specifically designed to transport liquid or gaseous materials within a tank. Additionally, if the tank is not permanently attached to the vehicle, it must have a rated capacity of 1,000 gallons or more.
No, you cannot legally transport liquid or gas materials without a valid CDL Tank endorsement in the United States. This endorsement is required for drivers who wish to operate a tank vehicle, defined as a commercial vehicle designed to transport any liquid or gaseous materials within a tank either permanently or temporarily attached to the vehicle.
You can add a CDL Tank endorsement to your current commercial driver's license. You don't need to apply for a new license. However, you must pass the Tank Vehicle written test. After passing, the endorsement will be added to your existing CDL, enabling you to operate tank vehicles legally.
Yes, handling hazardous materials with a CDL Tank endorsement requires an additional Hazmat endorsement. To obtain this, you must pass a written test about the regulations and safety precautions for handling hazardous materials. Additionally, a TSA background check is required to ensure you're not a security risk.
